Sarah Vaughan And Her Quartet
type: MusicGroup
genre: big band
genre: vocal jazz
popularity: 3
followers: 139
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0xba2d6c4c88febf86e4a114d25ba68f06e9acf5a916653b48d8f38ac31b0f54a8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954549
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954549
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ab258a1a-4d77-4324-8bed-60c0876a91e9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ab258a1a-4d77-4324-8bed-60c0876a91e9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ab258a1a-4d77-4324-8bed-60c0876a91e9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T10:56:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xba2d6c4c88febf86e4a114d25ba68f06e9acf5a916653b48d8f38ac31b0f54a8","name":"Sarah Vaughan And Her Quartet","registered_at":"2026-06-20T09:15:01Z","symbol":"NIM1579744","token_address":"0xd1c696a2f9bdd47923519a5328363de99701bd48","type":"artist","uuid":"ab258a1a-4d77-4324-8bed-60c0876a91e9"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2d6c4c88febf86e4a114d25ba68f06e9acf5a916653b48d8f38ac31b0f54a8. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab258a1a-4d77-4324-8bed-60c0876a91e9.json and https://artists.proofprofile.net/proofs/artist/ab258a1a-4d77-4324-8bed-60c0876a91e9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T10:56:20Z
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